The General Estimate System is a component of National Automotive Sampling System (NASS) maintained by the National Highway Traffic Safety Administration. The GES obtains its data from a nationally representative probability sample selected from the estimated 6.4 million police?reported crashes, which occur annually. These crashes include those that result in a fatality or injury, and those involving major property damage. By restricting attention to police?reported crashes, the GES concentrates on those crashes of greatest concern to the highway safety community and the general public.

GES is used to identify highway safety problems areas, provide a basis for regulatory and consumer information initiatives, and facilitate cost and benefit analyses of highway safety initiatives.

Coverage

The data covers 400 police agencies within 60 geographic sites across the United States.